I found this very interesting while reading "Concerning Christian Liberty" by Martin Luther. He had many confrontations on paper with folks he disagreed with. Here are some profound things he said to this particular pope, Pope Leo X. What would happen if we were to write like this to our local Pastors who are preaching and teaching everything BUT the Gospel?
"Wherefore, most excellent Leo, I beseech you to accept my vindication, made in this letter, and to persuade yourself that I have never thought any evil concerning your person; further, that I am one who desires that eternal blessing may fall to your lot, and that I have no dispute with any man concerning morals, but only concerning the word of truth. For many years now, nothing else has overflowed from Rome into the world--as you are not ignorant--than the laying waste of goods, of bodies, and of souls, and the worst examples of all the worst things. And the Church of Rome has become the most lawless den of thieves, the most shameless of all brothels, the very kingdom of sin, death, and hell; so that not even antichrist, if he were to come, could devise any addition to its wickedness. Under the influence of these feelings, I have always grieved that you, most excellent Leo, who were worthy of a better age, have been made pontiff in this. For the Roman Court is not worthy of you and those like you, but of Satan himself, who in truth is more the ruler in that Babylon than you are. Therefore, Leo, beware of listening to those sirens who make you out to be not simply a man, but partly a god, so that you can command and require whatever you will. It will not happen so, nor will you prevail. You are the servant of servants, and more than any other man, in a most pitiable and perilous position. Let not those men deceive you who pretend that you are lord of the world; who will not allow any one to be a Christian without your authority; who babble of your having power over heaven, hell, and purgatory. These men are your enemies and are seeking your soul to destroy it. They are in error who attribute to you alone the right of interpreting Scripture. In brief, trust not in any who exalt you, but in those who humiliate you."
Matthew 23:12 - "And whosoever shall exalt himself shall be abased; and he that shall humble himself shall be exalted."